λ-Deformations of left-right asymmetric CFTs

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• 作者：George Georgiou^a ; ^{georgiou@inp.demokritos.gr} ; Konstantinos Sfetsos^b ; ^{ksfetsos@phys.uoa.gr} ; Konstantinos Siampos^c ; ^{siampos@itp.unibe.ch}
• 刊名：Nuclear Physics B
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：914
• 期：Complete
• 页码：623-641
• 全文大小：362 K
• 卷排序：914

文摘

We compute the all-loop anomalous dimensions of current and primary field operators in deformed current algebra theories based on a general semi-simple group, but with different (large) levels for the left and right sectors. These theories, unlike their equal level counterparts, possess a new non-trivial fixed point in the IR. By computing the exact in λ two- and three-point functions for these operators we deduce their OPEs and their equal-time commutators. Using these we argue on the nature of the CFT at the IR fixed point. The associated to the currents Poisson brackets are a two-parameter deformation of the canonical structure of the isotropic PCM.